The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 804
Hash: 131070f5b6acd975005b3f4bf75a4d66bad105487de5c313bab523422b02e850
Previous block: 3421de62e78cce602f943df4e6809f6bd14f66ddda55ff6a2a154b64c7d9628d
Next block: 59c06e6ff541e0c989e5ff81eebec6211023bc8424b6a8bef82db4a6ef155864
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864277
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: e8e1716b850ba9aa77cabe8ef78770149d1875a6d3693165fd539bff9a8dd593
Median time: 1701864277
Difficulty: 4.656542373906925e-10
Confirmations: 1440
Chainwork: 000000000000000000000000000000000000000000000000000000000000064a
Bits: 207fffff